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alistair23-linux/drivers/media/usb/tm6000/tm6000-dvb.c
Sakari Ailus bcb63314e2 [media] media: Drop FSF's postal address from the source code files 
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
	drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
	&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2017-01-27 11:38:09 -02:00

456 lines
10 KiB
C
Raw Blame History

/*
* tm6000-dvb.c - dvb-t support for TM5600/TM6000/TM6010 USB video capture devices
*
* Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include "tm6000.h"
#include "tm6000-regs.h"
#include "zl10353.h"
#include <media/tuner.h>
#include "tuner-xc2028.h"
#include "xc5000.h"
MODULE_DESCRIPTION("DVB driver extension module for tm5600/6000/6010 based TV cards");
MODULE_AUTHOR("Mauro Carvalho Chehab");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Trident, tm5600},{{Trident, tm6000},{{Trident, tm6010}");
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "enable debug message");
static inline void print_err_status(struct tm6000_core *dev,
int packet, int status)
{
char *errmsg = "Unknown";
switch (status) {
case -ENOENT:
errmsg = "unlinked synchronuously";
break;
case -ECONNRESET:
errmsg = "unlinked asynchronuously";
break;
case -ENOSR:
errmsg = "Buffer error (overrun)";
break;
case -EPIPE:
errmsg = "Stalled (device not responding)";
break;
case -EOVERFLOW:
errmsg = "Babble (bad cable?)";
break;
case -EPROTO:
errmsg = "Bit-stuff error (bad cable?)";
break;
case -EILSEQ:
errmsg = "CRC/Timeout (could be anything)";
break;
case -ETIME:
errmsg = "Device does not respond";
break;
}
if (packet < 0) {
dprintk(dev, 1, "URB status %d [%s].\n",
status, errmsg);
} else {
dprintk(dev, 1, "URB packet %d, status %d [%s].\n",
packet, status, errmsg);
}
}
static void tm6000_urb_received(struct urb *urb)
{
int ret;
struct tm6000_core *dev = urb->context;
switch (urb->status) {
case 0:
case -ETIMEDOUT:
break;
case -ENOENT:
case -ECONNRESET:
case -ESHUTDOWN:
return;
default:
print_err_status(dev, 0, urb->status);
}
if (urb->actual_length > 0)
dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
urb->actual_length);
if (dev->dvb->streams > 0) {
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret < 0) {
printk(KERN_ERR "tm6000: error %s\n", __func__);
kfree(urb->transfer_buffer);
usb_free_urb(urb);
}
}
}
static int tm6000_start_stream(struct tm6000_core *dev)
{
int ret;
unsigned int pipe, size;
struct tm6000_dvb *dvb = dev->dvb;
printk(KERN_INFO "tm6000: got start stream request %s\n", __func__);
if (dev->mode != TM6000_MODE_DIGITAL) {
tm6000_init_digital_mode(dev);
dev->mode = TM6000_MODE_DIGITAL;
}
dvb->bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
if (dvb->bulk_urb == NULL)
return -ENOMEM;
pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
& USB_ENDPOINT_NUMBER_MASK);
size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
size = size * 15; /* 512 x 8 or 12 or 15 */
dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
if (dvb->bulk_urb->transfer_buffer == NULL) {
usb_free_urb(dvb->bulk_urb);
printk(KERN_ERR "tm6000: couldn't allocate transfer buffer!\n");
return -ENOMEM;
}
usb_fill_bulk_urb(dvb->bulk_urb, dev->udev, pipe,
dvb->bulk_urb->transfer_buffer,
size,
tm6000_urb_received, dev);
ret = usb_clear_halt(dev->udev, pipe);
if (ret < 0) {
printk(KERN_ERR "tm6000: error %i in %s during pipe reset\n",
ret, __func__);
return ret;
} else
printk(KERN_ERR "tm6000: pipe resetted\n");
/* mutex_lock(&tm6000_driver.open_close_mutex); */
ret = usb_submit_urb(dvb->bulk_urb, GFP_ATOMIC);
/* mutex_unlock(&tm6000_driver.open_close_mutex); */
if (ret) {
printk(KERN_ERR "tm6000: submit of urb failed (error=%i)\n",
ret);
kfree(dvb->bulk_urb->transfer_buffer);
usb_free_urb(dvb->bulk_urb);
return ret;
}
return 0;
}
static void tm6000_stop_stream(struct tm6000_core *dev)
{
struct tm6000_dvb *dvb = dev->dvb;
if (dvb->bulk_urb) {
printk(KERN_INFO "urb killing\n");
usb_kill_urb(dvb->bulk_urb);
printk(KERN_INFO "urb buffer free\n");
kfree(dvb->bulk_urb->transfer_buffer);
usb_free_urb(dvb->bulk_urb);
dvb->bulk_urb = NULL;
}
}
static int tm6000_start_feed(struct dvb_demux_feed *feed)
{
struct dvb_demux *demux = feed->demux;
struct tm6000_core *dev = demux->priv;
struct tm6000_dvb *dvb = dev->dvb;
printk(KERN_INFO "tm6000: got start feed request %s\n", __func__);
mutex_lock(&dvb->mutex);
if (dvb->streams == 0) {
dvb->streams = 1;
/* mutex_init(&tm6000_dev->streming_mutex); */
tm6000_start_stream(dev);
} else
++(dvb->streams);
mutex_unlock(&dvb->mutex);
return 0;
}
static int tm6000_stop_feed(struct dvb_demux_feed *feed)
{
struct dvb_demux *demux = feed->demux;
struct tm6000_core *dev = demux->priv;
struct tm6000_dvb *dvb = dev->dvb;
printk(KERN_INFO "tm6000: got stop feed request %s\n", __func__);
mutex_lock(&dvb->mutex);
printk(KERN_INFO "stream %#x\n", dvb->streams);
--(dvb->streams);
if (dvb->streams == 0) {
printk(KERN_INFO "stop stream\n");
tm6000_stop_stream(dev);
/* mutex_destroy(&tm6000_dev->streaming_mutex); */
}
mutex_unlock(&dvb->mutex);
/* mutex_destroy(&tm6000_dev->streaming_mutex); */
return 0;
}
static int tm6000_dvb_attach_frontend(struct tm6000_core *dev)
{
struct tm6000_dvb *dvb = dev->dvb;
if (dev->caps.has_zl10353) {
struct zl10353_config config = {
.demod_address = dev->demod_addr,
.no_tuner = 1,
.parallel_ts = 1,
.if2 = 45700,
.disable_i2c_gate_ctrl = 1,
};
dvb->frontend = dvb_attach(zl10353_attach, &config,
&dev->i2c_adap);
} else {
printk(KERN_ERR "tm6000: no frontend defined for the device!\n");
return -1;
}
return (!dvb->frontend) ? -1 : 0;
}
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
static int register_dvb(struct tm6000_core *dev)
{
int ret = -1;
struct tm6000_dvb *dvb = dev->dvb;
mutex_init(&dvb->mutex);
dvb->streams = 0;
/* attach the frontend */
ret = tm6000_dvb_attach_frontend(dev);
if (ret < 0) {
printk(KERN_ERR "tm6000: couldn't attach the frontend!\n");
goto err;
}
ret = dvb_register_adapter(&dvb->adapter, "Trident TVMaster 6000 DVB-T",
THIS_MODULE, &dev->udev->dev, adapter_nr);
dvb->adapter.priv = dev;
if (dvb->frontend) {
switch (dev->tuner_type) {
case TUNER_XC2028: {
struct xc2028_config cfg = {
.i2c_adap = &dev->i2c_adap,
.i2c_addr = dev->tuner_addr,
};
dvb->frontend->callback = tm6000_tuner_callback;
ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
if (ret < 0) {
printk(KERN_ERR
"tm6000: couldn't register frontend\n");
goto adapter_err;
}
if (!dvb_attach(xc2028_attach, dvb->frontend, &cfg)) {
printk(KERN_ERR "tm6000: couldn't register frontend (xc3028)\n");
ret = -EINVAL;
goto frontend_err;
}
printk(KERN_INFO "tm6000: XC2028/3028 asked to be attached to frontend!\n");
break;
}
case TUNER_XC5000: {
struct xc5000_config cfg = {
.i2c_address = dev->tuner_addr,
};
dvb->frontend->callback = tm6000_xc5000_callback;
ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
if (ret < 0) {
printk(KERN_ERR
"tm6000: couldn't register frontend\n");
goto adapter_err;
}
if (!dvb_attach(xc5000_attach, dvb->frontend, &dev->i2c_adap, &cfg)) {
printk(KERN_ERR "tm6000: couldn't register frontend (xc5000)\n");
ret = -EINVAL;
goto frontend_err;
}
printk(KERN_INFO "tm6000: XC5000 asked to be attached to frontend!\n");
break;
}
}
} else
printk(KERN_ERR "tm6000: no frontend found\n");
dvb->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING
| DMX_MEMORY_BASED_FILTERING;
dvb->demux.priv = dev;
dvb->demux.filternum = 8;
dvb->demux.feednum = 8;
dvb->demux.start_feed = tm6000_start_feed;
dvb->demux.stop_feed = tm6000_stop_feed;
dvb->demux.write_to_decoder = NULL;
ret = dvb_dmx_init(&dvb->demux);
if (ret < 0) {
printk(KERN_ERR "tm6000: dvb_dmx_init failed (errno = %d)\n", ret);
goto frontend_err;
}
dvb->dmxdev.filternum = dev->dvb->demux.filternum;
dvb->dmxdev.demux = &dev->dvb->demux.dmx;
dvb->dmxdev.capabilities = 0;
ret = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
if (ret < 0) {
printk(KERN_ERR "tm6000: dvb_dmxdev_init failed (errno = %d)\n", ret);
goto dvb_dmx_err;
}
return 0;
dvb_dmx_err:
dvb_dmx_release(&dvb->demux);
frontend_err:
if (dvb->frontend) {
dvb_unregister_frontend(dvb->frontend);
dvb_frontend_detach(dvb->frontend);
}
adapter_err:
dvb_unregister_adapter(&dvb->adapter);
err:
return ret;
}
static void unregister_dvb(struct tm6000_core *dev)
{
struct tm6000_dvb *dvb = dev->dvb;
if (dvb->bulk_urb != NULL) {
struct urb *bulk_urb = dvb->bulk_urb;
kfree(bulk_urb->transfer_buffer);
bulk_urb->transfer_buffer = NULL;
usb_unlink_urb(bulk_urb);
usb_free_urb(bulk_urb);
}
/* mutex_lock(&tm6000_driver.open_close_mutex); */
if (dvb->frontend) {
dvb_unregister_frontend(dvb->frontend);
dvb_frontend_detach(dvb->frontend);
}
dvb_dmxdev_release(&dvb->dmxdev);
dvb_dmx_release(&dvb->demux);
dvb_unregister_adapter(&dvb->adapter);
mutex_destroy(&dvb->mutex);
/* mutex_unlock(&tm6000_driver.open_close_mutex); */
}
static int dvb_init(struct tm6000_core *dev)
{
struct tm6000_dvb *dvb;
int rc;
if (!dev)
return 0;
if (!dev->caps.has_dvb)
return 0;
if (dev->udev->speed == USB_SPEED_FULL) {
printk(KERN_INFO "This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)\n");
return 0;
}
dvb = kzalloc(sizeof(struct tm6000_dvb), GFP_KERNEL);
if (!dvb) {
printk(KERN_INFO "Cannot allocate memory\n");
return -ENOMEM;
}
dev->dvb = dvb;
rc = register_dvb(dev);
if (rc < 0) {
kfree(dvb);
dev->dvb = NULL;
return 0;
}
return 0;
}
static int dvb_fini(struct tm6000_core *dev)
{
if (!dev)
return 0;
if (!dev->caps.has_dvb)
return 0;
if (dev->dvb) {
unregister_dvb(dev);
kfree(dev->dvb);
dev->dvb = NULL;
}
return 0;
}
static struct tm6000_ops dvb_ops = {
.type = TM6000_DVB,
.name = "TM6000 dvb Extension",
.init = dvb_init,
.fini = dvb_fini,
};
static int __init tm6000_dvb_register(void)
{
return tm6000_register_extension(&dvb_ops);
}
static void __exit tm6000_dvb_unregister(void)
{
tm6000_unregister_extension(&dvb_ops);
}
module_init(tm6000_dvb_register);
module_exit(tm6000_dvb_unregister);
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